102221211437 has 2 divisors, whose sum is σ = 102221211438. Its totient is φ = 102221211436.

The previous prime is 102221211419. The next prime is 102221211457. The reversal of 102221211437 is 734112122201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99736587721 + 2484623716 = 315811^2 + 49846^2 .

It is a cyclic number.

It is not a de Polignac number, because 102221211437 - 2³⁶ = 33501734701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102221211457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110605718 + 51110605719.

It is an arithmetic number, because the mean of its divisors is an integer number (51110605719).

Almost surely, 2^102221211437 is an apocalyptic number.

It is an amenable number.

102221211437 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221211437 is an equidigital number, since it uses as much as digits as its factorization.

102221211437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 102221211437 its reverse (734112122201), we get a palindrome (836333333638).

The spelling of 102221211437 in words is "one hundred two billion, two hundred twenty-one million, two hundred eleven thousand, four hundred thirty-seven".